Mahendran P, NaveenKumar K, Prasanth G, Soundharya M S and Vidhyashree S 2019. Implementation of students attendance monitoring system using RFID and GSM . International journal of intellectual advancements and research in engineering computations. 7, 1 (Mar. 2019), 1520–1529. DOI:https://doi.org/10.61096/ijiarec.v7.iss1.2019.1520-1529.